Spraying apparatus



I Dec. 8, 1942. REYNOLDS V 2,304,509

SPRAYING APPARATUS Filed Nov. 5, 1941 2 Sheets-Sheet l INYVENZTOR Harry M. Reynolds.

5 C ;ATTORNEYS Dec. 8, 1942. H. M. REYNOLDS I SPRAYING APPARATUS 2 Sheets-Sheet I ORNEYS INVENTOR Harry M. Reynolds.

Filed Nov. 5, 1941 Patented Dec. 8, 1942 ,iU NilTiED :sTAT-ss N am err-101E SPRAYING APPARATUS Harry M. Reynolds, Columbus, Ohio Application November 5, 1941, Serial No. 417,928

-8 Claims. 1(01. 91-45) My invention relates to a spraying .apparatus.

It has to.do,.more particularl rvwith spraying app u whi is parti u a y u u o a glassforming machine for sprayinga lubricant into the glass molds before the moltenglass is supplied thereto. However, my invention not necessarily limited thereto.

At the present time, it is customary in glass plants to use oil or similar liquid lubricants. It is important that the liquid lubricant. be atomized and sprayed on the molds in order to uniformly coat the molds with a film ofthe lubricant. Considerable diflicultyhas been encountered in providing suitable spraying apparatus for insuring that the'entiremolcl will be covered with the lubricant and this is particularly true when large molds are employed. It-is necessary that such apparatus be capable of adjustment quickly and easily without interrupting the operation of the forming machine which vin modern glass plants operates at a very high speed. Furthermore, it is necessary that such apparatusbe of such a nature that it willnot be detrimentally afiected by the high temperatures encountered adjacent glass-forming machines.

One of the objects of my invention is to provide spraying apparatus which .is particularly useful for spraying a lubricant. onlarge glass molds in such a manner that the molds will be uniformly coated with the lubricantover the.

entire surface of the. cavitythereof.

Another object of my invention is to provide spraying apparatus ofthe type indicated which may be adjusted quicklyand. easily without interrupting operation of the apparatus.

Another object of my invention is to provide apparatus of the type indicated which is of such a structure that it will readily withstand the high temperatures and the rugged use to which it is subjected when used in connectionwitha glass-forming machine.

In its preferred form myinvention contemplates the provision of spraying apparatus comprising a rotatable carrier adapted to carrya plurality of spraying heads. These spraying.

disclosed in my Patent heads may be of the type No. 2,237,842 which issued April 8, 1941. The carrier is rotated by -means of an airmotor which is associated therewith. The air supply for such a motor is readily available when my...

apparatus is used .in connection witha gla ssforming machine. The carrier is adapted to be disposed over a glass mold and to rotaterelative to the mold about the .axis of themold. This will insure that-the lubricant will be sprayed.

uniformly over the entire surface of the mold cavity. The spraying heads are so mounted on the carrier that the angle thereof may be readilyadjusted to insure proper uniformcoverage of themold cavity. Furthermore, the spraying heads may bereadily adjusted to vary the amount of lubricant sprayed therefrom. All of these adjustments may be easily and quickly made without operating any controls to interrupt rotation of the carrier. It is merely necessary to grasp the carrier and stop rotation thereof while the adjustments are being made.

The preferred embodiment of my invention is illustrated in the accompanying drawings wherein similar characters of reference designate corresponding parts and wherein:

Figure 1 'is a view partly-in side elevation and partly in vertical section of spraying apparatus constructed according to my invention, the sectional part being taken substantially along line ,Figures 1 and 3, thehousing 4 of the motor has ,a boss 5 on its lower surface which is bolted to the outer end of ahorizontal arm 5 by means of bolts 1. A similar boss 5a is provided on the top of the housing so that, if desired, the housing may be attached to the lower surface of an arm like the arm 6. Thearm 6 may be clamped to a post 8 by clamping means 9. The entire unit is. adapted to be disposed in such a position that theyrotatable carrier I will be over a mold which may be one of a plurality of molds carried by the glass-forming machine.

The housing 4 of the motor 3 consists of a bottom portionJO, a block portion H and atop portion I 2. Bolts l3 holdthese various portions .in properhassociation. As shown best in Figure 2, the block portion II has a pair of cylindrical cavities 14 formed therein. These cavities are disposed side by side, substantially tangential to each other, and are in communication with each other at their adjacent edges, as shown in Figure v,2. Each of these chambers l4 has a gear 15 disposed therein. Each of the gears I5 consists of a central body portion l6 which closely fits with the lower surface of the top portion I2 and the upper surface of the bottom portion I 0. Each gear has a plurality of radially extending circumferentially spaced teeth I I which have flat outer ends I8 that lie closely adjacent the wall of the cavity |4. These two gears I5 mesh with each other, as indicated in Figure 2. A conduit I9 is connected to one side of the housing 4 and is directed tangentially relative to the meshing portions of the gears I5. Another conduit 28 is similarly disposed in the opposite wall of the housing 4. One of the gears I5 is carried by a short shaft 2I which is rotatably mounted in bushings 22 at the upper and lower ends thereof which are carried by the portions l and I2. The other gear I is carried by a hollow shaft 23 which is rotatably carried in bushings 24 and 24a disposed in suitable openings in the bottom portion In and top portion I2. The gears I5 are tightly fitted on and rotate with the shafts which carry them.

It will be apparent from Figure 2 that if air under pressure is allowed to enter through the conduit I9, it will act on the teeth I! in the manner indicated by the arrows to rotate the left-hand gear I5 counterclockwise and the righthand gear I5 clockwise. The exhaust air will escape through the conduit 29. Because of the tight fit between the top and bottom surfaces of the gears, the outer ends of the teeth I! and the adjacent surfaces of the housing, very little air-will escape between these adjacent surfaces and most of it will act to produce rotation of the gears. If the direction of the air is reversed, that is, if the air enters through conduit and escapes through conduit I 9, the direction of rotation of the gear I5 will be reversed.

For accomplishing this reversal, I may provide a valve control of the type indicated in Figure 4. The valve 25 comprises a cylindrical housing 26 which has an opening I9a, connected to line I9, and an adjacent exhaust opening I9b. It is also provided with an opening 20a, connected to line 28, and an adjacent outlet opening 2011. Within the housing 25 a valve core 2'! is rotatably mounted. This member has grooves I90 and 20c formed at diametrically opposed points. It is also provided with a Y-shaped air passageway having branches I9d, 20d and 28. The outer end of branch 28 is connected to a groove 29. An opening 38 is provided for the main air supply. In Figure 4, the valve is shown in such position that air will enter housing 4 through line 20. Air will enter through inlet 30 into branch 28 and branches IM and 20d of the air passageway. However, the end of the branch lad is closed. The air entering branch 20d will flow through line 20 into housing 4. It will exhaust through line I9d. If the core 21 is rotated slightly clockwise, the branch Illd will communicate with opening I So while the opening 2011 will communicate with outlet 23b through groove 280. Then, air will flow into line I9 and exhaust from line 20. In

1 either position of the valve, the main inlet 30 is connected with branch 28. The valve may also be rotated to a neutral position. Thus, it will,

be apparent that by operation of the valve the air motor may be reversed or may be stopped completely.

It will be noted that the hollow shaft 23 projects a considerable distance below the housing 4. The carrier I i provided with a vertically disposed solid shaft portion 3| which has a chuck portion 32 on its upper end adapted to receive the extension of the shaft 23. Clamping means 33 serves to clamp chuck portion 32 to the extension of the hollow shaft. The lower end of the shaft portion 3| is shown as being square for receiving the inner ends of four horizontally disposed spray head supporting arms 34 which are bolted thereto between upper and lower shoulders 35 and 36. Although I have shown four of these supporting arms, it is to be understood that any desired number may be provided. Each of the arms 34 is provided with a series of openings 3! in any of which a bolt may be disposed which is threaded to the upper end of a spray head 2. Thus, each spray head 2 may be disposed at any selected distance from the axis of rotation of shaft 3| and may be disposed at any angle relative to the arm 34. Thus, these heads may all be so disposed relative to each other that the entire surface of the mold cavity will be subjected to the spray. The heads 2 are preferably of the construction illustrated in my Patent No. 2,237,842.

Each of the spray heads has a cap 38 which may be adjusted to change the amount of liquid spray, as disclosed in said patent. Also, as disclosed in said patent, each of the spray heads has connected thereto an air line 39 and an oil line 40 which are in the form of flexible conduits. Each line 40 is connected to a valve cock 4| carried by a fitting 42 threaded into the upper portion of shaft 3| and communicating with a pas sage 43. Similarly, each of the air lines 39 is connected to a valve cook 44 carried by a fitting 45 threaded into the upper portion of shaft 3| and communicating with a transverse passage 46. The passage 46 is in communication with the bore 41 formed within hollow shaft 23. The passage 43 is in communication with the bore in a tube 48 which passes upwardly through the shaft 23.

The upper end of the bore 41 is closed by a solid portion 49 of shaft 23 through which the oil tube 48 passes. The upper end of bore 41 is provided with transversely extending inlet openings 50 which communicate with an annular chamber 5| formed between upper and lower portions of the bushing 24a. Space 5| communicates with a line 52 which is connected to a source of main air supply which is under the 7 control of a valve cook 53.

I9, groove I90 and outlet f The oil tube 48 extends upwardly through a packing gland indicated generally by the numeral 54. It is connected to a tube 55 which is connected to a suitable source of oil. Tube 55 is threaded into a packing gland supporting portion 55 which is supported on the top portion |2 of housing 4 by means of bolts 51 and spacers 58. The support 56 has a depending threaded boss 59 and has a chamber for receiving packing material 68 which is disposed around tube 48. A sleeve BI is disposed within boss 59 and is adapted to compress the packing around tube 48. Sleeve 6| is adjustably held in position by means of a nut 62 threaded on portion 59 and locked in position by a nut 63. The lower end of tube 48 is connected to shaft 3| so that it will rotate therein. Thus, tube 48 will rotate relative to conduit 55. However, there will be no leakage of oil at this point because of the packing gland 54.

In the use of this apparatus, oil from the source of supply is allowed to enter through conduit 55. This oil will flow down through tube 48 and out through fittings 42, past valve 4 l' which will be opened/and into lines 40. Valve cock 53 will be open, allowing air to flo w through conduit 52, through bore 41, through bore 46, through fittings 45, past valves 44 which will be opened, into lines 39. Thus, the spray heads 2 will be operated in the manner disclosed in my patent. The valve 25 will be actuated to rotate the carrier l in the proper direction. The direction of rotation may be reversed at any time desired. During rotation of the carrier I, if it is desired to adjust the angle of any of the spray heads 2 or the cap 38 of any of the spray heads, it is not necessary to actuate the valve 25 to stop rotation of the carrier. It is merely necessary to grab one of the arms 34 andhold the carrier with sufficient force to overcome the air pressure against the teeth of gears 15. This will prevent rotation of the carrier and, consequently, rotation of gears l5 during the adjustment. The speed of rotation of gears I5 may be controlled by adjusting valve cock I90 or 200 which are connected to conduits I9 and 20, respectively, at the housing 4. This will vary the amount of air entering into the housing.

It will be apparent from the above description that I have provided a spraying apparatus embodying a rotatable carrier which will rotate the spraying unit relative to a mold to insure that all surfaces of the cavity thereof will be uniformly coated with the lubricant. The speed of rotation of the carrier may be controlled readily and also the direction of rotation thereof may be quickly changed. Due to the fact that the carrier is driven by an air motor, the carrier may be stopped without operating any control in order to adjust the spray heads. This is important since frequent adjustment of the spray heads are necessary and it is not necessary, therefore, to interrupt operation of my spraying apparatus. My spraying apparatus is of such a nature that it is of a very rugged construction and will withstand the high temperatures to which it might be subjected.

Various other advantages will be apparent from the preceding description, the drawings and the following claims.

Having thus described my invention, what I claim is:

1. Spraying apparatus of the type described comprising an air motor, said air motor comprising a housing having intermeshing gears disposed therein, means for supplying air into said housing to cause rotation of said gears, one of said gears being supported by a shaft extending from the housing, a spray head supported by said shaft, and means for supplying liquid and air to said spray head.

2. Spraying apparatus of the type described comprising an air motor, said air motor comprising a housing having a pair of substantially tangentially disposed cavities formed therein, each of said cavities having a gear disposed therein, said gears meshing with each other, each of said gears being carried by a shaft rotatably mounted in said housing, means for supplying air between said intermeshing gears to cause rotation thereof, one of said shafts extending from said housing, and a spray head supported by said extending portion of said shaft.

3. Spraying apparatus of the type described comprising an air motor, said air motor comprising a housing having a pair of substantially tangentially disposed cylindrical cavities formed therein in communication with each other, each of said cavities having a gear disposed therein, said gears meshing With each other, each of said gears being carried by a shaft rotatably mounted in said housing, means for supplying air into said housing between said intermeshing gears to cause rotation thereof, one of said shafts extending from said housing and being hollow, a spray head supported on said shaft, means for supplying air to the interior of said shaft, a liquid supply tube disposed within said shaft, and means for connecting said tube and the interior of said shaft to said spray head.

4. Apparatus according to claim 3 wherein means for supplying air into said housing comprises oppositely disposed conduits connected to aid housing at opposite sides of the intermeshing gears and a valve for selectively controlling the supply of air and exhaust of air through said conduits.

5. Apparatusv according to claim 3 wherein a plurality of spray heads are carried by said carrier and wherein a pair of conduits is connected to each of said spray heads and to said hollow shaft and liquid supply tube, said conduits having valve cocks disposed therein.

6. Spraying apparatus of the type described comprising an air motor, said air motor comprising a housing having a pair of substantially tangentially disposed cylindrical cavities formed therein in communication with each other, each of said cavities having a gear disposed therein, said gears meshing with each other, each of said gears being carried by a shaft rotatably mounted in said housing, means for supplying air into said housing between said intermeshing gears to cause rotation thereof, one of said shafts extending through said gear in both directions and projecting from said housing, said shaft being hollow, a spray head supported by the projecting portion of said shaft, means for supplying air to the interior of said shaft during rotation thereof, a liquid supply tube disposed within said shaft and adapted to rotate therewith, means for connecting said tube and the interior of said shaft to said spray head, said liquid supply tube projecting from said housing in a direction opposite to that of the projecting portion of said shaft, and means for connecting said tube to a stationary oil supply conduit, said means comprising a packing gland carried by said housing.

7. Apparatus according to claim 6 wherein the means for supplying air to said housing comprises oppositely disposed conduits connected to the housing and disposed substantially tangential relative to said gears, and a valve connected to said conduits and adapted to be selectively actuated to permit air to enter through one of said conduits and exhaust through the other or vice versa.

8. Apparatus according to claim 6 wherein the means for supplying air to said housing comprises oppositely disposed conduits connected to the housing and disposed substantially tangential relative to said gears, a valve connected to said conduits and adapted to be selectively actuated to permit air to enter through one of said conduits and exhaust through the other or vice versa, and a valve interposed in each of said conduits for controlling the amount of air entering into said housing.

HARRY M. REYNOLDS. 

